Doc narrowly avoids coming face-to-face with his younger self in 1955, who stands in front of the flatbed trailer (on the far left).

"There it was, the wire running down from the clock tower [of the Hill Valley Courthouse] to the lamppost, and the toolbox on the trailer, sitting next to the DeLorean hidden under the tarpaulin. It gave Doc a thrill just to see everything set up again. Wasn't science wonderful?"